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Analog Devices - 1.2 V Precision Low Noise Shunt Voltage Reference

Numéro de référence ADR512
Description 1.2 V Precision Low Noise Shunt Voltage Reference
Fabricant Analog Devices 
Logo Analog Devices 





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ADR512 fiche technique
1.2 V Precision Low Noise
Shunt Voltage Reference
ADR512
FEATURES
Precision 1.200 V Voltage Reference
Ultracompact 3 mm ؋ 3 mm SOT-23 Package
No External Capacitor Required
Low Output Noise: 4 V p-p (0.1 Hz to 10 Hz)
Initial Accuracy: ؎0.3% Max
Temperature Coefficient: 60 ppm/؇C Max
Operating Current Range: 100 A to 10 mA
Output Impedance: 0.3 Max
Temperature Range: –40؇C to +85؇C
APPLICATIONS
Precision Data Acquisition Systems
Battery-Powered Equipment:
Cellular Phone, Notebook Computer, PDA,
and GPS
3 V/5 V, 8-/12-Bit Data Converters
Portable Medical Instruments
Industrial Process Control Systems
Precision Instruments
GENERAL DESCRIPTION
Designed for space critical applications, the ADR512 is a low
voltage (1.200 V), precision shunt-mode voltage reference in the
ultracompact (3 mm ϫ 3 mm) SOT-23 package. The ADR512
features low temperature drift (60 ppm/ЊC), high accuracy
(Ϯ0.30%), and ultralow noise (4 V p-p) performance.
The ADR512’s advanced design eliminates the need for an
external capacitor, yet it is stable with any capacitive load. The
minimum operating current increases from a scant 100 A to a
maximum of 10 mA. This low operating current and ease of use
make the ADR512 ideally suited for handheld battery-powered
applications.
PIN CONFIGURATION
3-Lead SOT-23
V+ 1
V2
ADR512
3 TRIM/NC
ADR512
Model
ADR512ART-REEL7
Output
Voltage
(VO)
1.200
Initial
Accuracy
(mV) (%)
3.5 0.3
Temperature
Coefficient
(ppm/؇C)
60
A TRIM terminal is available on the ADR512 to provide adjust-
ment of the output voltage over Ϯ0.5% without affecting the
temperature coefficient of the device. This feature provides
users with the flexibility to trim out any system errors.
IL + IQ
VS
RBIAS
ADR512
IQ
IL
VOUT = 1.2V
COUT
(OPTIONAL)
VS – VOUT
RBIAS = IL + IQ
Figure 1. Typical Operating Circuit
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.

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